Jay Z will headline this year’s Global Citizen Festival on September 27 at New York’s Central Park. Other confirmed acts include No Doubt, Carrie Underwood, fun., Tiesto and the Roots.

The one-day festival aims to raise awareness fir extreme poverty worldwide, with hopes of eradicating it by 2030. “I think what we found last year is that the movement has diversified,” said Hugh Evans, chief executive of the organization behind the festival, the Global Poverty Project. “It’s incredible to have the king of hip-hop on one end of the bill, coupled with the king of EDM on the other end of the bill, and in the middle we’ve got one of the biggest country stars in America.”

Tickets to the Global Citizen Festival cannot be purchased; rather, they must be earned through tasks like sending a tweet or watching an informative video. Regardless of what they choose, would-be concertgoers should act fast, based on the success of last year’s festival. Past headliners included Alicia Keys, John Mayer and Stevie Wonder, who surprised the crowd with his cover of John Lennon‘s “Imagine.”